Add 21/28 and 90/24
1st number: 21/28, 2nd number: 3 18/24
21/28 + 90/24 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 28 × 6 = 168,
21/28 = 21 × 6/28 × 6 = 126/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
90/24 = 90 × 7/24 × 7 = 630/168 - Add the two like fractions:
126/168 + 630/168 = 126 + 630/168 = 756/168 - 756/168 simplified gives 9/2
- So, 21/28 + 90/24 = 9/2
In mixed form: 41/2
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